From owner-freebsd-multimedia@FreeBSD.ORG Fri Oct 7 02:39:34 2005 Return-Path: X-Original-To: freebsd-multimedia@freebsd.org Delivered-To: freebsd-multimedia@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B82D216A41F; Fri, 7 Oct 2005 02:39:34 +0000 (GMT) (envelope-from skywizard@MyBSD.org.my) Received: from tomoyo.MyBSD.org.my (tomoyo.mybsd.org.my [202.157.186.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2A61E43D45; Fri, 7 Oct 2005 02:39:34 +0000 (GMT) (envelope-from skywizard@MyBSD.org.my) Received: from localhost (localhost [127.0.0.1]) by tomoyo.MyBSD.org.my (Postfix) with ESMTP id 1A3D16CC22; Fri, 7 Oct 2005 10:40:06 +0800 (MYT) Received: from tomoyo.MyBSD.org.my ([127.0.0.1]) by localhost (tomoyo.MyBSD.org.my [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 48659-06; Fri, 7 Oct 2005 10:40:04 +0800 (MYT) Received: from kasumi.MyBSD.org.my (kasumi.MyBSD.org.my [IPv6:2001:328:2002:aa2::1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by tomoyo.MyBSD.org.my (Postfix) with ESMTP id 0FDA26CC27; Fri, 7 Oct 2005 10:40:04 +0800 (MYT) Date: Fri, 7 Oct 2005 10:40:20 +0800 From: Ariff Abdullah To: David Xu Message-Id: <20051007104020.54184b39.skywizard@MyBSD.org.my> In-Reply-To: <4345D8E0.2020101@freebsd.org> References: <20051006141525.4171b911.skywizard@MyBSD.org.my> <4345C235.8060205@freebsd.org> <20051007090957.28da4c9e.skywizard@MyBSD.org.my> <4345D8E0.2020101@freebsd.org> Organization: MyBSD X-Mailer: /usr/local/lib/ruby/1.8/net/smtp.rb Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Virus-Scanned: by amavisd-new-antivirus-mail-gateway at TOMOYO.MYBSD.ORG.MY Cc: freebsd-multimedia@freebsd.org, Alexander@Leidinger.net, noackjr@alumni.rice.edu Subject: Re: DAC1 / DAC2 for ex137x - ES1370/1/2/3 , CT5880/CT4730(EV1938) X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 Oct 2005 02:39:34 -0000 On Fri, 07 Oct 2005 10:09:36 +0800 David Xu wrote: > > I have applied *_052.diff, what is difference with _052slave.diff ? > .. *slave.diff contains 'slave' implementation, a tiny layer to reduce (playback / locking) contention / latency between hardware interrupt delivery and userland io. If you experiencing random 'pops' or 'clicks', it is probably worth a try. 'Buzz'ing or continuous stuttering/crackling is another issue, mostly related to non-PREEMPTION kernel or PCI latency timing issue (which is why you get hw.snd.pcm0.latency_timer on es137x). -- Ariff Abdullah MyBSD http://www.MyBSD.org.my (IPv6/IPv4) http://staff.MyBSD.org.my (IPv6/IPv4) http://tomoyo.MyBSD.org.my (IPv6/IPv4)